ZyXEL Communications ZyXEL ZyWALL 5 - Manual (Page 125)

ZyWALL 5 User’s Guide
124 Chapter 7 WAN Screens
You can configure the WAN port's MAC address by either using the factory default or cloning
the MAC address from a computer on your LAN. Once it is successfully configured, the
address will be copied to the "rom" file (ZyNOS configuration file). It will not change unless
you change the setting or upload a different "rom" file.
Note: ZyXEL recommends you clone the MAC address from a computer on your LAN
even if your ISP does not require MAC address authentication.
7.2 TCP/IP Priority (Metric)
The metric represents the "cost of transmission". A router determines the best route for
transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the
measurement of cost, with a minimum of "1" for directly connected networks. The number
must be between "1" and "15"; a number greater than "15" means the link is down. The
smaller the number, the lower the "cost".
1 The metric sets the priority for the ZyWALL's routes to the Internet. Each route must
have a unique metric.
2 The priorities of the WAN port routes must always be higher than the dial-backup and
traffic redirect route priorities.
For example, if the WAN port route has a metric of "1" and the traffic-redirect route has a
metric of "2" and dial-backup route has a metric of "3", then the WAN port route acts as the
primary default route. If the WAN port route fails to connect to the Internet, the ZyWALL
tries the traffic-redirect route next. In the same manner, the ZyWALL uses the dial-backup
route if the traffic-redirect route also fails.
The dial-backup or traffic redirect routes cannot take priority over the WAN port routes.
7.3 Configuring Route
Click WAN to open the Route screen.
Table 34 Example of Network Properties for LAN Servers with Fixed IP Addresses
Choose an IP address 192.168.1.2-192.168.1.32; 192.168.1.65-192.168.1.254.
Subnet mask 255.255.255.0
Gateway (or default route) 192.168.1.1(ZyWALL LAN IP)